FR2655214A1 - MOTOR ROTOR WITH MAGNETS. - Google Patents

MOTOR ROTOR WITH MAGNETS. Download PDF

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Publication number
FR2655214A1
FR2655214A1 FR8915550A FR8915550A FR2655214A1 FR 2655214 A1 FR2655214 A1 FR 2655214A1 FR 8915550 A FR8915550 A FR 8915550A FR 8915550 A FR8915550 A FR 8915550A FR 2655214 A1 FR2655214 A1 FR 2655214A1
Authority
FR
France
Prior art keywords
rotor
magnets
motor
lobes
rotor according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR8915550A
Other languages
French (fr)
Other versions
FR2655214B1 (en
Inventor
Royer Laurent
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom Holdings SA
Original Assignee
GEC Alsthom SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to FR8915550A priority Critical patent/FR2655214B1/en
Application filed by GEC Alsthom SA filed Critical GEC Alsthom SA
Priority to AT90403359T priority patent/ATE102764T1/en
Priority to EP90403359A priority patent/EP0430795B1/en
Priority to JP3500671A priority patent/JPH0757075B2/en
Priority to DK90403359.4T priority patent/DK0430795T3/en
Priority to US07/730,870 priority patent/US5162686A/en
Priority to DE69007243T priority patent/DE69007243T2/en
Priority to ES90403359T priority patent/ES2052216T3/en
Priority to PCT/FR1990/000857 priority patent/WO1991008607A1/en
Publication of FR2655214A1 publication Critical patent/FR2655214A1/en
Application granted granted Critical
Publication of FR2655214B1 publication Critical patent/FR2655214B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
    • H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets

Abstract

PCT No. PCT/FR90/00857 Sec. 371 Date Jul. 19, 1991 Sec. 102(e) Date Jul. 19, 1991 PCT Filed Nov. 27, 1990 PCT Pub. No. WO91/08607 PCT Pub. Date Jun. 13, 1991.A rotor for a motor having magnets, the rotor comprising a rotary shaft and at least one pair of magnetic poles with magnets disposed therebetween having azimuth magnetization, the rotor being characterized in that the poles and the magnets are fixed to each other and to the rotor by a section member (30) of constant thickness having a section with as many lobes (31, 32, 33, 34) as there are poles in the motor, said lobes being interconnected in pairs by curved portions, (41, 42, 43, 44) which are substantially circular arcs of diameter close to that of the shaft (1) of the motor. The invention is applicable to a synchronous motor having magnets.

Description

-1 - La présente invention concerne un rotor pour moteur à aimants etThe present invention relates to a rotor for a motor with magnets and

s'applique notamment à la réalisation d'un  applies in particular to the realization of a

moteur synchrone à aimants permanents.  synchronous motor with permanent magnets.

Un des problèmes majeurs rencontrés dans la réalisation des moteurs à aimants est celui posé par la fixation des tôles et des aimants entre eux et sur l'arbre du moteur La fixation doit être robuste pour résister à toutes les contraintes mécaniques (efforts engendrés par la force centrifuge, transmission du couple entre rotor et arbre). Par ailleurs, le type de fixation retenu doit être économique, et conduire notamment à des temps de montage réduits. L'invention à pour objet un rotor pour un moteur à aimants comprenant au moins une paire de pôles magnétiques entre lesquels sont disposés des aimants à aimantation azimutale, et un arbre de rotation, caractérisé en ce que les pôles et les aimants sont solidarisés entre eux et au rotor par un profilé d'épaisseur constante et présentant en section des lobes en nombre égal à ceux des pôles du moteur, lesdits lobes étant relié deux à deux par des portions courbes sensiblement en arcs de cercle de  One of the major problems encountered in the realization of magnet motors is that posed by the attachment of the sheets and magnets between them and on the motor shaft The attachment must be robust to withstand all mechanical stresses (forces generated by the force centrifugal, torque transmission between rotor and shaft). Moreover, the type of attachment chosen must be economical, and lead in particular to reduced assembly time. The subject of the invention is a rotor for a magnet motor comprising at least one pair of magnetic poles between which magnets with azimuthal magnetization are arranged, and a rotation shaft, characterized in that the poles and the magnets are connected together. and to the rotor by a profile of constant thickness and having in section lobes in number equal to those of the motor poles, said lobes being connected in pairs by curved portions substantially in circular arcs of

diamètre voisin de celui de l'arbre du moteur.  diameter close to that of the motor shaft.

Avantageusement, ledit profilé est choisi dans le groupe comprenant les alliages d'aluminium, les alliages de cuivre, l'acier inoxydable austénitique, la fibre de  Advantageously, said profile is chosen from the group comprising aluminum alloys, copper alloys, austenitic stainless steel,

verre et la fibre de carbone.glass and carbon fiber.

Dans un mode particulier de réalisation, les tôles du rotor sont assemblées au moyen de coupelles d'extrémité  In a particular embodiment, the sheets of the rotor are assembled by means of end cups

serrées par des tiges filetées munies d'écrous.  tightened by threaded rods with nuts.

En variante, les tôles du rotor sont assemblées au moyen de coupelles d'extrémité serrées par des tiges  Alternatively, the rotor plates are assembled by means of end cups clamped by rods

lisses munies d'anneaux dentelés.smooth with serrated rings.

-2- Dans une autre variante, les tôles du rotor sont assemblées au moyen de coupelles d'extrémité serrées par  In another variant, the rotor laminations are assembled by means of end caps clamped by

des rivets.rivets.

Il peut être prévu des moyens pour renforcer le profilé, par exemple des tubes d'acier fendus engagés dans  It can be provided means for reinforcing the profile, for example slotted steel tubes engaged in

les lobes du profilé.the lobes of the profile.

L'invention sera bien comprise par la description  The invention will be well understood from the description

donnée ci-après d'un mode préféré de réalisation de l'invention en référence au dessin annexé dans lequel: la figure 1 est une vue en coupe, par un plan perpendiculaire à son axe de rotation, d'un rotor selon l'invention, la figure 2 est une vue en demi-coupe axiale d'un rotor dont les éléments sont assemblés par des tiges filetées, la figure 3 est une vue en coupe axiale d'un rotor dont les éléments sont assemblés par des rivets, la figure 4 est une vue en demi-coupe axiale d'un rotor dont les éléments sont assemblés par des tiges lisses associées à des anneaux dentelés, les figures 5 et 6 illustrent le montage des tôles  given below a preferred embodiment of the invention with reference to the accompanying drawing in which: Figure 1 is a sectional view, through a plane perpendicular to its axis of rotation, a rotor according to the invention; FIG. 2 is an axial half-sectional view of a rotor whose elements are assembled by threaded rods; FIG. 3 is an axial sectional view of a rotor whose elements are assembled by rivets, FIG. 4 is an axial half-sectional view of a rotor whose elements are assembled by smooth rods associated with serrated rings, FIGS. 5 and 6 illustrate the mounting of the plates.

du rotor sur le profilé.rotor on the profile.

L'exemple choisi est celui d'un moteur à quatre pôles. Dans la figure 1, la référence 1 désigne un arbre autour duquel sont disposés quatre pôles magnétiques 11, 12, 13 et 14, formés de tôles magnétiques découpées et  The example chosen is that of a four-pole motor. In FIG. 1, the reference numeral 1 denotes a shaft around which four magnetic poles 11, 12, 13 and 14 formed of cut-out magnetic sheets are arranged and

serrées entre elles par des moyens décrits plus loin.  tightened together by means described below.

Entre les tôles sont placés des aimants permanents 21, 22, 23 et 24 à aimantation azimutale, c'est-à-dire perpendiculaire à l'axe O de l'arbre et aux rayons partant de ce point Deux aimants voisins présentent en regard  Between the sheets are placed permanent magnets 21, 22, 23 and 24 with azimuthal magnetization, that is to say perpendicular to the axis O of the shaft and rays from this point Two neighboring magnets have opposite

l'un de l'autre des pôles nord (N) ou sud (S) de même nom.  one of the other north (N) or south (S) poles of the same name.

Les aimants sont disposés dans les logements laissés par les tôles; ils sont maintenus radialement par des -3- épanouissements polaires des pâles, tels que ceux  The magnets are arranged in the housings left by the sheets; they are held radially by polar blooms of pale, such as those

référencés 11 A et 11 B pour le pôle 11.  referenced 11A and 11B for pole 11.

L'ensemble des pôles et des aimants est fixé à l'aide d'un profilé 30 en matériau de préférence amagnétique, choisi par exemple dans le groupe constitué par les alliages d'aluminium, les alliages de cuivre, l'acier inoxydable austénitique, la fibre de verre et la fibre de carbone Ce profilé vient enserrer l'arbre 1 Il est d'épaisseur constante et présente la forme de quatre l O lobes 31, 32, 33 et 34, circulaires et presque fermés Les lobes sont raccordés deux à deux par des portion d'arc d'un cercle ayant pour diamètre celui de l'arbre Ces portions, référencées 41, 42, 43 et 44, viennent en  The set of poles and magnets is fixed using a profile 30 of preferably non-magnetic material, chosen for example from the group consisting of aluminum alloys, copper alloys, austenitic stainless steel, fiberglass and carbon fiber This profile comes close to the shaft 1 It is of constant thickness and has the shape of four lobes 31, 32, 33 and 34, circular and almost closed The lobes are connected two to two by portions of arc of a circle having for diameter that of the shaft These portions, referenced 41, 42, 43 and 44, come in

contact étroit avec l'arbre.close contact with the tree.

La figure 2 illustre un mode de fixation des tôles dans lequel des tiges filetées 51 sont introduites à l'intérieur des lobes et sont munies de boulons 52 et 53 venant enserrer les tôles 11, avec interposition de coupelles d'extrémité 54 et 55 Les coupelles servent  FIG. 2 illustrates a method of fastening the sheets in which threaded rods 51 are introduced inside the lobes and are provided with bolts 52 and 53 coming to grip the plates 11, with the interposition of end cups 54 and 55. serve

également de butées longitudinales pour les aimants.  also longitudinal stops for the magnets.

La figure 3 illustre une variante dans laquelle la fixation des tôles et des aimants du rotor est assuré au moyen des mêmes coupelles 54 et 55, mais cette fois fixées au moyen de rivets 62 et 63, en matériau de préférence amagnétique, montés à la presse Dans une autre variante, illustrée dans la figure 4, les mêmes coupelles 54 et 55 sont enserrées grâce à des tiges lisses 71 coopérant avec des anneaux dentelés 72 et 73 (plus connus dans la terminologie anglaise sous le nom de " 1 grip rings") Dans les exemple précédemment décrits, les organes d'assemblages (tiges filetées ou non, rivets) sont introduits à l'intérieur des lobes du profilé et servent également à renforcer le profilé On peut en variante, introduire ces éléments d'assemblages dans des trous des tôles, comme il est classique de le faire De tels trous -4- ont été représentés en traits tiretés et référencés 81 à  FIG. 3 illustrates a variant in which the plates and magnets of the rotor are secured by means of the same cups 54 and 55, but this time fixed by means of rivets 62 and 63, made of preferably non-magnetic material, mounted on the press In another variant, illustrated in FIG. 4, the same cups 54 and 55 are clamped together by means of smooth rods 71 cooperating with serrated rings 72 and 73 (better known in the English terminology as "1 grip rings"). In the previously described examples, the assembly members (threaded or non-threaded rods, rivets) are introduced inside the lobes of the profile and also serve to reinforce the profile. Alternatively, these assembly elements can be inserted into holes. as it is conventional to do such holes -4- have been shown in dashed lines and referenced 81 to

84 dans la figure 1.84 in Figure 1.

Dans ce cas, on peut prévoir des moyens pour renforcer le profilé Ces moyens sont par exemple constitués de tubes en métal élastique tel que l'acier, fendus, et qui sont engagés à l'intérieur des volumes délimités par les lobes Un de ces tubes, 91, est représenté dans la figure 1 Ces tubes ont tendance à s'épandre radialement, ce qui accroît la pression du  In this case, one can provide means for reinforcing the profile These means are for example made of elastic metal tubes such as steel, slotted, and which are engaged within the volumes defined by the lobes One of these tubes , 91, is shown in Figure 1 These tubes tend to spread radially, which increases the pressure of the

profilé sur l'arbre du rotor.profile on the rotor shaft.

Les figures 5 et 6 illustrent le montage des tôles du rotor Les tôles sont découpées et préassemblées, par exemple par un procédé dans lequel chaque tôle reçoit un poinçonnage provoquant une cavité sur une face et une saillie sur la face opposée, la saillie d'une tôle coopérant avec la cavité de la tôle adjacente (Ce procédé  FIGS. 5 and 6 illustrate the mounting of the rotor plates. The sheets are cut and preassembled, for example by a method in which each sheet receives a punching causing a cavity on one face and a projection on the opposite face, the projection of a sheet cooperating with the cavity of the adjacent sheet (This method

est connu sous le nom de procédé Fastec).  is known as the Fastec process).

On assemble deux paquets opposés 11 et 13 en les engageant dans les lobes 31 et 33; pour faciliter le glissement, on exerce des efforts F diamétralement opposés sur les autres lobes 32 et 34; pour monter les paquets 12 et 14, on applique, sur les paquets 11 et 13 déjà montés,  Two opposite packets 11 and 13 are assembled by engaging them in the lobes 31 and 33; in order to facilitate sliding, diametrically opposite forces F are exerted on the other lobes 32 and 34; to mount the packets 12 and 14, it is applied on the packets 11 and 13 already mounted,

des efforts F' diamétralement opposés.  F 'diametrically opposed efforts.

Le profilé étant élastique, lorsque l'on supprime  The profile being elastic, when one deletes

les efforts F ou F', les tôles restent emprisonnées.  the efforts F or F ', the sheets remain trapped.

Les aimants peuvent montés à la main dans les  Magnets can be mounted by hand in

logements correspondants.corresponding housing.

L'invention s'applique aux moteurs synchrones à  The invention applies to synchronous motors with

aimants multipolaires.multipolar magnets.

-5--5-

Claims (5)

REVENDICATIONS 1/ Rotor pour un moteur à aimants comprenant au moins une paire de pôles magnétiques entre lesquels sont disposés des aimants à aimantation azimutale, et un arbre de rotation, caractérisé en ce que les pâles et les aimants sont solidarisés entre eux et au rotor par un profilé ( 30) d'épaisseur constante et présentant en section des lobes ( 31, 32, 33, 34) en nombre égal à ceux des pôles du moteur, lesdits lobes étant reliés deux à deux par des portions courbes ( 41, 42, 43, 44) sensiblement en arcs de cercle de diamètre voisin de celui de l'arbre ( 1) du moteur. 2/ Rotor selon la revendication 1, caractérisé en ce que ledit profilé est choisi dans le groupe comprenant les alliages d'aluminium, les alliages de cuivre, l'acier inoxydable austénitique, la fibre de verre et la fibre de carbone.  1 / rotor for a magnet motor comprising at least one pair of magnetic poles between which magnets with azimuth magnetization are arranged, and a rotation shaft, characterized in that the blades and the magnets are secured together and to the rotor by a section (30) of constant thickness and having in section lobes (31, 32, 33, 34) in number equal to those of the motor poles, said lobes being connected in pairs by curved portions (41, 42, 43 , 44) substantially in circular arcs of diameter close to that of the shaft (1) of the motor. 2 / rotor according to claim 1, characterized in that said profile is selected from the group consisting of aluminum alloys, copper alloys, austenitic stainless steel, fiberglass and carbon fiber. 3/ Rotor selon l'une des revendications 1 et 2,  3 / rotor according to one of claims 1 and 2, caractérisé en ce qu'il comprend des moyens ( 91) pour  characterized in that it comprises means (91) for renforcer le profilé ( 30).strengthen the profile (30). 4/ Rotor selon la revendication 3, caractérisé en ce que lesdits moyens comprennent des tubes fendus ( 91) en métal  4 / rotor according to claim 3, characterized in that said means comprise split tubes (91) of metal élastique, engagés à l'intérieur des lobes.  elastic, engaged inside the lobes. / Rotor selon l'une des revendications 1 à 4, caractérisé  Rotor according to one of Claims 1 to 4, characterized en ce que les tôles ( 11, 12, 13, 14) du rotor sont assemblées au moyen de coupelles d'extrémité ( 54, 55) serrées par des tiges filetées ( 51) munies d'écrous ( 52, 53).  in that the laminations (11, 12, 13, 14) of the rotor are assembled by means of end cups (54, 55) clamped by threaded rods (51) provided with nuts (52, 53). 6/ Rotor selon l'une des revendications 1 à 4, caractérisé  6 / rotor according to one of claims 1 to 4, characterized en ce que les tôles ( 11, 12, 13, 14) du rotor sont assemblées au moyen de coupelles d'extrémité ( 54, 55) serrées par des tiges lisses ( 71) munies d'anneaux  in that the plates (11, 12, 13, 14) of the rotor are assembled by means of end cups (54, 55) clamped by smooth rods (71) provided with rings. dentelés ( 72, 73).toothed (72, 73). 7/ Rotor selon l'une des revendications 1 à 4, caractérisé  7 / rotor according to one of claims 1 to 4, characterized en ce que les tôles ( 11, 12, 13, 14) du rotor sont -6 - assemblées au moyen de coupelles d'extrémité ( 54, 55)  in that the laminations (11, 12, 13, 14) of the rotor are assembled by means of end cups (54, 55) serrées par des rivets ( 62, 63).tightened by rivets (62, 63).
FR8915550A 1989-11-27 1989-11-27 MAGNET MOTOR ROTOR. Expired - Lifetime FR2655214B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
FR8915550A FR2655214B1 (en) 1989-11-27 1989-11-27 MAGNET MOTOR ROTOR.
EP90403359A EP0430795B1 (en) 1989-11-27 1990-11-27 Rotor of a motor with magnets
JP3500671A JPH0757075B2 (en) 1989-11-27 1990-11-27 Magnet motor rotor
DK90403359.4T DK0430795T3 (en) 1989-11-27 1990-11-27 Rotor for a motor with magnets
AT90403359T ATE102764T1 (en) 1989-11-27 1990-11-27 ROTOR OF AN ENGINE WITH MAGNETS.
US07/730,870 US5162686A (en) 1989-11-27 1990-11-27 Motor rotor having magnets
DE69007243T DE69007243T2 (en) 1989-11-27 1990-11-27 Rotor of a motor with magnets.
ES90403359T ES2052216T3 (en) 1989-11-27 1990-11-27 MOTOR ROTOR WITH MAGNETS.
PCT/FR1990/000857 WO1991008607A1 (en) 1989-11-27 1990-11-27 Magnetized motor armature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8915550A FR2655214B1 (en) 1989-11-27 1989-11-27 MAGNET MOTOR ROTOR.

Publications (2)

Publication Number Publication Date
FR2655214A1 true FR2655214A1 (en) 1991-05-31
FR2655214B1 FR2655214B1 (en) 1992-02-07

Family

ID=9387799

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8915550A Expired - Lifetime FR2655214B1 (en) 1989-11-27 1989-11-27 MAGNET MOTOR ROTOR.

Country Status (9)

Country Link
US (1) US5162686A (en)
EP (1) EP0430795B1 (en)
JP (1) JPH0757075B2 (en)
AT (1) ATE102764T1 (en)
DE (1) DE69007243T2 (en)
DK (1) DK0430795T3 (en)
ES (1) ES2052216T3 (en)
FR (1) FR2655214B1 (en)
WO (1) WO1991008607A1 (en)

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WO1991008607A1 (en) 1991-06-13
US5162686A (en) 1992-11-10
DE69007243T2 (en) 1994-06-16
JPH0757075B2 (en) 1995-06-14
ES2052216T3 (en) 1994-07-01
EP0430795B1 (en) 1994-03-09
ATE102764T1 (en) 1994-03-15
EP0430795A1 (en) 1991-06-05
JPH04500450A (en) 1992-01-23
DK0430795T3 (en) 1994-07-04
DE69007243D1 (en) 1994-04-14
FR2655214B1 (en) 1992-02-07

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